“Why is Starship made of stainless steel? This article from 5 years ago explains the reasons. Worth noting that the ship would have failed on reentry if made of aluminum or carbon fiber, as they can’t take the heat. https://t.co/QVAtv74quq https://www.popularmechanics.com/space/rockets/a25953663/elon-musk-spacex-bfr-stainless-steel/”